Who/What You Are:
A witch, Rowena's daughter

You Meet Him:
      You were visiting your mother and brother in hell. You'd talked for awhile until Crowley had to do some kingly business. Bored, you started wandering around, seeing what hell had to offer.
     Eventually, you found yourself in an area where most, not even Crowley, went. You peeked in one room to find a large cage inside it. And in that cage, sitting cross-legged, was young man.
      Even sitting down, it was obvious the guy was tall, with a thick mop of blond hair, pretty eyes, and slim body, not skinny but not overly muscular either. He was wearing blue jeans, a black t-shirt, and a blue jacket.
     The guy looked up when you entered the room and gave you the saddest look you'd ever seen.
     "Hey, I'm (y/n) MacLeod. Who are you?"
     "Adam. Adam Winchester."
     "Winchester? As in Sam and Dean Winchester?"
     "They're my brothers."
     To say you were surprised was putting it mildly. Adam explained everything that had happened and, when he was finished, you just knew you had to rescue him. You went back to your room to grab your spellbook and used a spell on Adam that would allow him to go back to Earth and escape the cage.
      Before you opened the door, you told him, "This spell will allow you to go back. When you do, find your brothers. I'll come to you tonight to check on you."
      He rose to his full height and stared into your eyes. "Thank you, (y/n)."
      You smiled and opened the cage. "Good luck, Adam."

What He Thought When He Met You:
      Being stuck in this cage is a nightmare! I don't understand why I'm still here if Michael is gone!
      Who's that girl? She's very pretty.
      She knows my brothers? From what she says, I guess they're friends or something.
      How I got here....that's just...I don't know. It's bad. She looks so sad at what happened to me. Why do I feel bad that she's sad?
      At least she's getting me out of here. And I don't mind seeing her again. Now, if I can just find my brothers....

Your Second Meeting:
      That night, you made your way to the bunker and knocked on the door. To say the brothers were surprised to see you was an understatement.
      After explaining what you had done for Adam, the Winchester's let you stay.

You Find Out What He Is:
      A few days after you had freed Adam from the cage, you were looking through your spellbook while the boys were away on a case. Something about the spell you had used popped out at you.
      Not quite believing it, you stood up and began looking over the spell again. Your eyes widened when you realized what you had done and you placed a hand over your mouth in shock.
      Unbeknownst to you, Adam had entered the room while you were freaking out and he got worried when he saw you.
     "(Y/n)?" He asked.
     You turned to him and said, "I'm so sorry, Adam. I completely botched the spell."
     "What are you talking about?"
     "The spell I used to get you out of the cage. It had a nasty side effect."
      "What?"
      "I accidentally made you my familiar."

The Aftermath:
      "What is that?" Adam asked.
      "Well, when a witch uses a bonding spell on a human, that human becomes her familiar. Basically, you're sort of like a companion."
       You explained what being a familiar entailed, including what he was to do as one, basically being your helper. Adam listened and eventually shrugged. "Well out of all the things I've been used for, turned into, and been through, this isn't that bad."
     "Really?"
     "Hey." He smiled and took your hand in his. "I like you. This just gives me an excuse to be with you."
      That made you blush.

First Date:
      Sometime later, you were getting prepared for a date with a guy you met online. Sam and Dean were preparing to go out on a hunt while Adam was staying behind with you as that was his place now that he was your familiar.
      You dressed up in a beautiful black dress and strapped heels with your (h/c) up in a fancy updo. You thought you looked beautiful.
      "Well, someone looks like a princess!" Dean said, throwing his arms around you and playfully kissing you on the cheek.
      Sam rolled his eyes at his brother before enveloping you in a hug. "Dean's right. You look gorgeous, sweetheart."
      At that moment, Adam walked downstairs and saw you. "Wow! You look...wow!"
      You smiled. "Thanks, boys. Now go! You've got a couple vampire asses to kick!"
      Both of the older Winchesters hugged you again as they headed out the door. Right before Dean passed through the door, he shouted, "Have fun with my little bro!"
      The comment made you blush but you didn't bother to correct him. Even if you did have a crush on the youngest Winchester, the rules were very clear: a witch never gets into a romantic relationship with her familiar.
     You turned to Adam who seemed to be blushing just as much as you. "So...uh...Adam. I need you to stay in your (dog breed or wolf) form tonight. If a guy sees you in human form, it'll look weird y'know."
      "Sure."
      He shrugged but you could've sworn he looked hurt for a second. Then the doorbell rang and Adam immediately shifted as you ran to get the door.
      It was your date.
      "Hey, (name)." You said, smile on your face.
      "Well, hello, gorgeous."
      You invited him in and went to check on the food you had started cooking.
      "What a cute dog!"
      (Name) tried to pet him, but Adam growled.
      "He doesn't like to be touched." You said, trying to cover for Adam.
      And, thus, began the start of a very long date for you. Everytime you and (name) tried to get close, Adam would get between you. He wouldn't let (name) touch him and especially not you. His behavior was strange, almost as if he was hurt or jealous. 
      At one point, you and (name) went outside to get some fresh air and to talk. You took a short walk, making small talk. A few minutes later, he stopped, making you stop dead in your tracks, and leaned close to you. You thought he was about to kiss you and, for some reason, it made you feel as if you were betraying Adam. 
      You turned your head and (name) whispered in your ear, "Now that we're away from your familiar, I can do whatever I want to you, little witch."
      Before you even had a chance to work out what he was saying, he attacked you. At that moment, Adam leapt out of nowhere and tackled what you finally figured out was a demon. Quickly, while Adam had control of the demon, you exorcised it.
      After it was done, Adam shifted back to human form. You ran into his arms and cried on his shoulder. 
      "Why him?" Adam asked. "Why won't you just be mine?" You pulled away from him and gazed into his eyes which were glazed in tears. "I love you."
      "Adam...you know the rules. A witch and her familiar can't be involved romantically." He hung his head, sadly. You shrugged. "Good thing I've never been one for following the rules."
     You took his hand and brought him back inside to finish your date...this time with the right guy.

First Kiss:
      A few hours passed. You had dinner and were in the middle of a movie marathon. Looking at him, you saw him gazing at you intensely before your gaze drifted to his lips. Immediately, your lips connected and he pulled you into his lap.
     Just then, the door opened and the other two Winchester brothers entered. You and Adam pulled away and blushed. The room was quiet.
     Then, Dean shouted, "I knew it! I FUCKING KNEW IT!"
     Sam rolled his eyes. "Yea. You totally knew."
     You burst out laughing.

First I Love You:
     Later that night, you fell asleep on Adam's shoulder. He saw you were sleeping and told his brothers he was gonna put you to bed. He picked you up bridal style and carried you to your room. Just as he laid you on the bed, you woke up.
     "Stay with me." you begged. He smiled, leaned down, and kissed you. "By the way, I love you too."
     With that, you fell back asleep. Instead of shifting and laying at the foot of the bed as he usually did, he laid next to you in human form and cuddled with you as he fell asleep with you.

Nicknames:
Your nickname for him: My pet basically as an inside joke between the two of you.
His nickname for you: Mistress for the same reason as yours.

Necklace He Gives You as a Gift:

Soulmate AU:
     **Everyone has an aura around their bodies that has a certain color that matches their soulmate.***
     You knew you would never meet your soulmate. 
     In a world where soulmates existed and everyone had one, your aura was what drew you to your soulmate. Around your body was your own specific aura, the color of which matched your soulmate.
     The problem? Your aura was black. The only time an aura was black was if your soulmate had died.
      Sadly, you would never meet and would wander the earth until you died. Only then, maybe you could find your soulmate.
      So it was really surprising one day when a man randomly appeared in your house one day, claiming to be your mate. His aura was black, but the second your hands touched, both of your auras changed to a deep burgundy.
      "My name is Adam. I'm so sorry to have scared you but I was stuck in Lucifer's cage for 10 years. The only reason I got out was because I felt your longing and it was so great that I broke free and immediately came hear to find you."
      You learned a few things that day. First, black didn't always mean dead. Second, when you touched your soulmate, your blackened aura would change. Third, an aura could call out to your soulmate to guide him home. And fourth, you were completely in love with your soulmate.